Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas voltas Ken Wharton deu?
 ###Tabelas: CREATE TABLE race_calendar_and_winners (race_calendar_and_winners_id AUTO_INCREMENT PRIMARY KEY, Round INT, Race VARCHAR, Circuit VARCHAR, Date VARCHAR, Event VARCHAR, Winning driver VARCHAR) CREATE TABLE teams_and_drivers (teams_and_drivers_id AUTO_INCREMENT PRIMARY KEY, Entrant VARCHAR, Constructor VARCHAR, Chassis VARCHAR, Engine VARCHAR, Tyre VARCHAR, Driver VARCHAR, Rounds VARCHAR) CREATE TABLE wanganui_district (wanganui_district_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Years VARCHAR, Gender VARCHAR, Area VARCHAR, Authority VARCHAR, Decile INT, Roll INT) CREATE TABLE all-time_professional_quarterback_passing_statistics (all-time_professional_quarterback_passing_statistics_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Name VARCHAR, Tenure VARCHAR, Leagues VARCHAR, Attempts INT, Completions INT, Comp % VARCHAR, Touchdowns INT, Interceptions INT, Yardage INT, QB Rating VARCHAR) CREATE TABLE 2005_results (2005_results_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Starts INT, Cuts made INT, Best finish VARCHAR, Money list rank INT, Earnings ($) INT)  
SELECT Rounds FROM teams_and_drivers WHERE Driver = ken wharton